Entries from 2017-12-25 to 1 day
Problem Description: You are on an infinitely large grid. Initially you are at coordinate (0, 0). You would move towards of the four directions (URDL) each unit of time, and stop at the first integer coordinate that had not yet been visite…
Problem Description: You have a graph with N vertices, M edges. You are then given Q queries, each denoted by three indexes of nodes, A, B, and C. For every such query, you need to output whether it is possible to visit node A, B, and C, i…